Fastener



FIG. 1 is a top left side perspective view of a fastener showing our new design.

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image thereof.

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a top left side perspective view of a second embodiment thereof.

FIG. 7 is a front elevational view thereof, the rear elevational view being a mirror image thereof.

FIG. 8 is a left side elevational view thereof, the right side elevational view being a mirror image thereof.

FIG. 9 is a top plan view thereof.

FIG. 10 is a bottom plan view thereof.

FIG. 11 is a top left side perspective view of a third embodiment thereof.

FIG. 12 is a front elevational view thereof, the rear elevational view being a mirror image thereof.

FIG. 13 is a left side elevational view thereof, the right side elevational view being a mirror image thereof.

FIG. 14 is a top plan view thereof.

FIG. 15 is a bottom plan view thereof.

FIG. 16 is a top left side perspective view of a fourth embodiment thereof.

FIG. 17 is a front elevational view thereof, the rear elevational view being a mirror image thereof.

FIG. 18 is a left side elevational view thereof, the right side elevational view being a mirror image thereof.

FIG. 19 is a top plan view thereof; and,

FIG. 20 is a bottom plan view thereof.

The broken lines represent portions of the fastener that form no part of the claim. 

The ornamental design for a fastener, as shown and described. 